| 由半刚性三羧酸配体构筑的一维和二维钴(Ⅱ)配位聚合物的合成、晶体结构及磁性质 |
| Syntheses,Crystal Structures and Magnetic Properties of 1D and 2D Cobalt(Ⅱ) Coordination Polymers Constructed from Semir-igid Tricarboxylic Acid |
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| 摘要: 采用水热方法，用半刚性三羧酸配体（H3cpta）和菲咯啉（phen）或2，2'-联吡啶（2，2'-bipy）与CoCl2·6H2O反应，合成了一个一维链状配位聚合物[Co（μ2-Hcpta）（phen）（H2O）]n（1）和一个二维层状配位聚合物[Co3（μ5-cpta）2（2，2'-bipy）2]n（2），并对其结构和磁性质进行了研究。结构分析结果表明2个配合物均属于单斜晶系，P21/c空间群。配合物1具有一维链状结构，而且这些一维链状结构通过C-H…O氢键作用进一步形成了二维超分子网络。而配合物2具有由三核钴单元构筑的二维层状结构。研究表明，配合物1和2中相邻钴离子间存在反铁磁相互作用。 |
| 关键词: 配位聚合物 氢键 三羧酸配体 磁性 |
| 基金项目: |
| Abstract: Two 1D and 2D cobalt (Ⅱ)coordination polymers, namely[Co (μ2-Hcpta) (phen) (H2O)]n (1)and[Co3 (μ5-cpta)2 (2,2'-bipy)2]n (2), have been constructed hydrothermally using H3cpta (H3cpta=2-(2-carboxyphenoxy)terephthalic acid), phen (phen=phenanthroline)or 2,2'-bipy (2,2'-bipy=2,2'-bipyridine), and cobalt chloride. Single-crystal X-ray diffraction analyses revealed that the two compounds crystallize in the monoclinic system, space group P21/c. In compound 1, the carboxylate groups of Hcpta2- ligands bridge alternately neighboring metal ions to form a chain. Adjacent chains are assembled to a 2D supramolecular network through C-H…O hydrogen bond. Compound 2 shows a 2D sheet based on Co3 units. Magnetic studies for compounds 1 and 2 demonstrate an antiferromagnetic coupling between the adjacent Co (Ⅱ)centers. CCDC:1507502, 1; 1507503, 2. |
| Keywords: coordination polymer hydrogen bonding tricarboxylic acid magnetic properties |
| 投稿时间：2016-09-30 修订日期：2016-12-02 |
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| 顾文君,顾金忠.由半刚性三羧酸配体构筑的一维和二维钴(Ⅱ)配位聚合物的合成、晶体结构及磁性质[J].无机化学学报,2017,33(2):227-236. |
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